Automatic weighing and filling machine.



H. G. DEWEY.

AUTOMATIC WEIGHING AND FILLING MACHINE.

APPLICATION FILED JULY 11,1912. 1 1 1 25,271. Patented Jan.19,1915.

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H. G. DEWEY.

AUTOMATIC WEIGHING AND FILLING MACHINE.

APPLIGATION FILED JULY 11, 1912 1,120,271. Patented Jan.19,1915.

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THE NORRIS PETERS C0,, PHDTCLITHOH WASHINGTON, D c,

H. G. DEWEY.

AUTOMATIC WEIGHING AND FILLING MACHINE.

APPLICATION FILED JULY11,1912.

1,125,271. Patented Jan.19, 1915.

10 SHEETSSHEET 3.

THE NORRIS PETERS (30-. EHOTD-LITHO" WASHINGTON, D1 Cv H. G. DEWEY.

AUTOMATIC WEIGHING AND FILLING MACHINE.

APPLICATION FILED JUL'Y 11,1912.

Patented Jan. 19, 1915.

10 SHEETS-SHEBT 4.

344mm toz THE NORRIS PETERS CO4, F'HOTO-LITHO.. WASHINGTON H. G. DEWEY.

AUTOMATIC WEIGHING AND FILLING MACHINE.

APPLICATION FILED JULY 11,1912.

Patented J an. 19, 1915.

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H. G. DEWEY.

AUTOMATIC wmeme AND FILLING MACHINE.

Patented Jan. 19, 1915.

10 SHEETS-SHEET 6.

APPLICATION FILED JULY 11, 1912.

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, -gqms PETEE co PHOTO-LITHQ. WASHING mm. D c.

H. G. DEWEY.

AUTOMATIC WEIGHING AND FILLING MACHINE.

APPLICATION FILED JULY 11,1912.

1,125,271. Patented Jan.19,1915.

10 SHEETSSHEBT 7.

win mm MAM/Q THE NORRIS PETERS 60.. FHOTOJJTHO. WASHINQ mm. 0 c,

H. G. DEWEY;

AUTOMATIC WEIGHING AND FILLING MACHINE.

APPLICATION FILED JULY 11,1912.

1,125,271. Eatent-sd Jan. 19, 1915.

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THE NORRIS PETERS co, PHOTG-LITHQ, WASHING TON. u. C.

H. G. DEWEY. AUTOMATIC WEIGHING AND FILLING MACHINE.

APPLICATION FILED JULY11,1912.

1 Patented Jan. 19, 1915.

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NORRIS PETERS cow. PHO'IC-LITHQ. WASHINGTON, D c.

H. G. DEWEY.

APPLIOATION FILED JULY 11,1912.

Patented Jan. 19, 1915.

10 SHBETSSHEET 10.

WWW 61W,- 421) THE NORRIS PETERS C01. PHOTO-LITHO. WASHINGTON. D c

UNITED STATES PATENT orricn.

HAYWOOD GUION DEWEY, OF EAST ORANGE, NEVI JERSEY, ASSIGNOB T0 SINGLESERVICE PACKAGE CORPORATION OF AMERICA, OF NEW YORK, N. Y., A CORPORA-'IION OF NEW JERSEY.

AUTOMATIC VVEIGHING AND FILLING MACHINE.

Original application filed October 17, 1911, Serial No. 655,157.

To all whom it may concern Be it known that I, HAYWOOD GUION DEWEY, acitizen of the United States, residing at East Orange, in the county ofEssex and State of New Jersey, have invented certain new and usefulImprovements in Automatic lVeighing and Filling Machines; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will. enable others skilled in the art towhich it appertains to make and use the same.

This invention relates to a machine for weighing predeterminedquantities of powder or other finely divided material, especiallyadapted for use in connection with the means for packing such materialinto cans or other containers such as disclosed in my copendingapplication #655,157, filed October 17, 1911, for automatic fillingmachines, of which this application is a division.

The main objects of this invention are to produce an automatic weighingmechanism which will segregate a predetermined quantity of the material,and deliver the same into a suitable chute or conveyor which in turn iscapable of conducting said powder to an air exhausting device, fromwhich it may be delivered into automatically positioned receptacles asdisclosed in said appli cation above. At the same time, I providesuitable clutch and cam devices for auto matically so controlling thevarious parts of the mechanism as to cause them to first weigh thepowder, then pack and fill the cans while exhausting the air from thepowder and cans, and lastly to restore all the parts to their originalposition ready for another cycle of operations.

To these ends the invention comprises the novel details of constructionand combinations of parts providing a rapid, positive and efiicientautomatic weighing means adapted to weigh one or a plurality of chargesof powder, and to deliver the same to suitable packing or filling meanswhich is controlled by the weighing mechanism, and which effectuallyprevents any notice able loss of the finely divided material by spillingor dissipation, into the surrounding atmosphere as disclosed in my saidprior Specification of Letters Patent.

Patented Jan. 19, 1915.

Divided and this application filed J'u1y 11,

Serial No. 708,924.

application. The whole being combined with suitable conveying means forthe receptacles, to bring them successively into positions to be filled,and with suitable connecting mechanisms by which all the various partsare so governed and timed as to cause the above operations to bepositive, efficient, certain and automatic in action, all as will bemore fully described hereinafter and particularly pointed out in theclaims.

Referring to the accompanying drawings forming a part of thisspecification in which like characters designate like parts in all theviews :Figure 1 is a side elevational view of a machine built inaccordance with my invention; Fig. 2 is a plan view of the machine withpart of the automatic weighing mechanism omitted; Fig. 3 is a frontelevational view with the automatic weighing mechanism, vacuum pump andvacuum tank removed; Fig. 4 is a cross sectional view taken on the line4l of Fig. 2, and looking in the direction of the arrows; Fig. 5 is across sectional view taken on the line 55 of Fig. 2 and looking in thedirection of the arrows; Fig. 6 is an en largecl detail view of theautomatic weighing mechanism; Fig. 7 is a plan view of the parts shownin Fig. 6; Fig. 8 is an enlarged detail view of the automatic weighingmechanism similar to Fig. 6, but showing the parts in their extreme orcut-ofi position after the weighing operation is completed; Fig. 9 is anenlarged detail top plan view of a portion of the bucket discharging andclutch operating mechanisms; Fig. 10 is a detail perspective view of theinverted bottom of one of the scale buckets; Fig. 11 is a frontelevational view of the parts shown in Fig. 9; Fig. 12 is a crosssectional view taken on the line 1212 of Fig. 11, showing the scalebucket discharge mechanism; Fig. 13 is a front elevational view, similarto Fig. 11, of the parts shown in Fig. 9, but showing the dischargingand clutch operating mechanism in their extreme positions; and Fig. 1 1is a cross sectional view taken on the line 1-il14 of Fig. 13 andlooking in the direction of the arrows.

This machine comprises an automatic weighing means, associated with apacking means, can conveying or carrying means,

and clutch and cam mechanisms, all so connected and timed, that aplurality of cans, or other containers, may be rapidly and successivelyfilled with a predetermined amount of powder, as will now appear.

In the preferred construction, shown in the drawings, the machinecomprises three complete weighing, packing and can conveying mechanisms,all of which are under the control of one set of operating means, butfor the sake of clearness, only one unit and its coacting operatingmeans will be described in detail, it being understood that the otherunits are duplicates, and that as many other units as may be desired,may be added to the machine at will.

The machine is of the general shape and construction shown in thedrawings, and is provided with the side frames A and B held together bythe truss beams such as C and D, and the top or bed plate E, (Fig. at).

Mounted on any suitable support, attached to the top plate E of themachine is a feed hopper 1, (see Figs. 1, 6, 7 and 8) which is adaptedto receive powder or other material to be weighed and packed by themachine. Any suitable agitating means 2 to facilitate the feeding of thepowder, may be mounted within the hopper and driven from any convenientsource of power. This hopper is preferably provided at its dis chargeend with two rock shafts 3 (Figs. 6 and 7) on which are mounted thecut-off gates 1. Short arms 5 5 rigidly mounted on the ends of the rockshafts 3 are pivotally connected to the toggle levers 6 and 7, the lever7 being extended beyond the movable stud 8 connecting said levers, andterminating in a weight 9. This stud 8 is of sufiicient length to extendon its inner end between the guides 10, and has freely mounted on itsouter end an anti-friction roller 11, which consequently travels in avertical plane by reason of said stud 8 and guides 10.

A trip trigger 12 is pivotally mounted on a stud 13 which is locatedbelow the roller 11 and approximately in the vertical line of which thesaid roller travels. This trigger 12 is preferably of the constructionshown, and is provided with the short weighted arms 14 and a longerweighted arm 15, which arm 15 has pivotally mounted on its outer end atrip yoke 16.

The mechanism just described is known as the powder feed mechanism andis automatically controlled by the scale mechanism, which latter alsocontrols the other movements of the machine which are in synchronismwith the weighing operations, as will appear below. 7 I

Mounted in suitable bearings on the top plate E and running transverselythe entire width ofthe machine is the clutch shaft 17 (see Figs. 1, 2, 4and 5) which operates in; tiniitte tly, making one revolution for eachcycle of the machine, as will be described. Mounted also in suitablebearings on the top plate E, and running parallel with the shaft 17, isthe constantly rotating main power shaft 18 which is driven by thepulley 19, from any suitable source of power.

20 indicates a spur pinion rigidly fixed on the power shaft 18, whichtransmits power to the spur gear 21, loosely mounted on the clutch shaft17. Thespur gear 21 is provided with a series of clutch pockets 22 onits inner face (see Figs. 5 and 11) which pockets are adapted to receivethe driving end .of a pawl 23, which is pivotally mounted in the lug 24,carried by the spur gear 25, fast on the clutch shaft 17. Consequently,the spur gear 21, pawl 23, and spur gear 25, constitute a clutch whichimparts motion to the clutch shaft 17, but of course any other suitableconnection may be provided.

The operation by which this clutch mechanism is controlled by the scalemechanism will now be described.

Mounted on the bed plate E is the scale yoke or support 26 4) and onthis support is the scale beam 27 which carries on one end the weighingbucket 28 and on its inner end the counter-balancing weight 29. Thebottom 30of the bucket is hinged as at 31 (see Figs. 11 and 12) and heldin a closed position by the latch 32 pivoted on the side of the bucket.This latch 32 is provided with a trip arm 33 adapted to be operated bythemovable trip 34 mounted on the trip shaft 35. .Said trip, shaft 35 isfreely moimtedin the brackets 36 on the top plate E of the machine andis of sufficient length to provide a trip 31 for each weighing unit asshown in .Fig. 2. This trip 34L is struck by the arm 33 and releases thebottom 30 of the bucket when it has reached its lowest position afterhaving re ceived its predetermined amount of powder, as will be readilyunderstood. During the downward movement of the scale beam27 under theinfluence of a predetermined amount of powder,the pin 300 carried bysaid beain (see Figs. 6 and 8 contacts with the bottom of the trip yoke16 and displaces the trip trigger 12 from beneath the antifrictionroller-.11 which allows the toggle levers 6 and 7 under the influence ofthe weight 9 to close the cut-01f gates 1-4 and stop the flow of powderfrom the weighing bucket, as will be clear from the drawings.

The downward movement of the bucket 28 is limited by the scale beam 27coming into contact with the adjustable stops 37 mounted on the arms ofthe scale beam support or yoke 26. The bottom 30 of the scale bucket is}furtherprovided with a counter- W ighfl38. (Fig-.11) oreturnitt i sc sedpo iti n after the eoll iit. a ebe rd 'r charged, and at the same timethe scale beam 27 under the influence of the Weight 29- (Figs. 6 and 8)returns to its initial position, to receive a subsequent charge ofpowder. Sufficient space is allowed between the pin 300 and the top ofthe trip yoke 16 to permit of the return of the scale beam 27. As thebottom 30 of the weighing bucket swings downward to discharge thecontents of said bucket, the lug 39 thereon (Figs. 10, 13 and 14)engages the pin &0 on the weighted lever 41, pivoted as at. 2 to the topplate E. This engagement of the lug 39 carried by the bottom 30 with thepin 40, throws the weighted lever 41 to one side as shown in Fig. 13.During this movement the pin 43 also carried by the lever 41, moves inthe slot 301 in the bar 44 (Figs. 11, 13 and 14) and the weighted lever41 accumulates sufficient momentum to cause the pin -it3 to move the bar4% longitudinally and unhook the latch 45 pivoted on the top plate E.The unhooking of the latch 45 releases the holding arm 46 rigidl I heldon the rock shaft 47, which shaft is journaled in bearings 48 on theplate E (see Figs? and 9), and runs across the machine substantially atright angles to the shaft 17 The movement of the rock shaft 47 under theinfluence of the weighted end of the arm 49 (Fig. 11) disengages the arm50, of the bell crank lever 51, from the anti-friction roller 52, on oneend of the pawl 23, which permits said pawl under the influence of thespring 53 to be thrown into engagement with one of the clutch pockets 22in the face of the gear 21 and therefore causes power to be transmittedthrough said pawl to the shaft 17.

The movement of the rock shaft 47 under the influence of the weightedarm 49 is limited by the lug 54 on the weighted arm 49 contacting withthe stop 55 carried by the top plate E.

As previously stated, the operation of one weighing unit only has beendescribed. If, however, a plurality of units are employed, as in theconstruction shown in Fig. 2, it is evident that the rock shaft M willnot be free to release the pawl 23 until all of the weighing bucketshave discharged their contents, so that a new cycle of operations cannotbe begun until each of the units is ready for it.

Rigidly mounted on the clutch shaft 17 is a cam 56 (Fig. 9) whichengages the roller 57 carried on the end of an arm 58 rigidly mounted onthe rock shaft 47. Early in the rotation of the clutch shaft 17, whichis in the direction of the arrow (Figs. 9, 11 and 13) the roller 57 willfollow under the in- Huence of the weight 49 the face of the cam 56 andreturn the rock shaft a? and the bell crank 51 to their initialpositions; that is, from the positions shown in Fig. 13, to those shownin Fig. 11, This return movement brings the holding arm 46 of the bellcrank into proper position to reengage the pivoted latch 45 and alsobrings the arm 50 of said bell crank into the path of the anti-frictionroller 52 so that upon the completion of one revolution of the clutchshaft 17 the clutch will be disengaged by reason of this antifrictionroller contacting with the said arm 50. Immediately following the actionof the cam 56, the cam 59, which is also rigid with the clutch shaft 17,operates through the roller 60, lever 61, and reset bar 62, and pin 63to return the weighted lever 41 to the position shown in Fig. 11. Duringthis return movement of the lever 41, the pin 43 acting in the slot 301in the bar er resets the pivoted latch 45 and causes the same to engagethe holding arm 46 and to retain the rock shaft 47 and its coactingparts in their initial positions. The cam 59 after having reset theweighted arm :1 and pivoted latch 45, returns the reset bar 62 to itsinitial position leaving the weighted arm 41 free to perform asubsequent operation, as has been previously described. To prevent thescale bucket 28 from discharging its contents if it should receive asecond charge of powder during a single cycle of operations, the trip 3*is lowered beyond a possible engagement with the trip arm 33 immediatelyafter the machine starts, as shown by dotted lines in F 12. Thismovement is effected by the cam 65, on the clutch shaft 17, through theroller 66, mounted on the cam bar 67, and lever 68. The trip 3f isreturned to its upper or tripping position by the continued rotation ofthe cam 65 slightly in advance of the completion of the cycle of theclutch shaft 17.

A set collar 69 (Figs. 9, 11 and 13) is mounted on the shaft 17 andabuts against the cam bar 67, as a keeper, to hold the cam bar inengagement with the cam.

From the mechanism so far disclosed, it will be clear that if power isconstantly applied to the pulley 19, the operation of filling a bucket28 with a predetermined amount of powder, and of the weighing mechanismwhich determines this amount, will so control the clutch mechanism 23 asto cause power to be automatically applied to the shaft 17 after eachweighing operation. And further, if a plurality of weighing units areemployed, power will not be applied to said shaft 17 until the last unithas completed its cycle of movements. It will also be clear that afterthe last weighing bucket has discharged its contents, the mechanismswill be automatically restored to their normal positions ready to repeatthe original cycle of movements. After the bottom 30 of a weighingbucket has been released by the latch 33, the contents of the bucketpasses down a chute 7'? (Fig. 4)

into the filling or packing mechanism which 2-;

latter causes said contents to be suitably filled into the cans orreceptacles 89, all as will be clear from my application #655,157 above.Before the powder or other finely divided material however, is passedinto the said cans, it is very desirable that the air should bewithdrawn from the containers, in order to prevent the powder fromfioating in the air that would otherwise be contained therein, and alsoin order to prevent said air from interfering with the efficient actionof the packing plungers. Therefore, it is very desirable to control theexhaustion of the containing vessels from the weighing mechanism, and tothis end during the movement of the rock shaft 47, above described, andin addition to causing the clutch to transmit power to the shaft 17, theweighing mechanism also controls the air exhaust valve F Figs. 2 and 5)by means of connections between said shaft 17 and said valve, as willalso be clear from my application above.

When a new cycle of operations begins, a cam (Figs. 2, 6, 7 and S)rigidly mounted on the clutch shaft 17 opens the powder cut-01f gates 4,4 within the hopper 1, and allows a new charge of powder to flow intothe weighing bucket 28. The opening of these cut-off gates 4, 4 by thecam 70 is effected through the connections comprising a roller 71 on thecam connection 72 which is pivotally connected to the short arm 73rigidly fixed to the rock shaft 74. A. lifting arm 75 also rigidly fixedto the rock shaft 74 contacts at its lower end with the weight 9 andelevates it from the position shown in full lines in Fig. 8 to thatshown in dotted lines, and during this movement the toggle levers 6 and7 by reason of their pivot connection at 8 elevate the anti-frictionroller 11 and allow the trip trigger 12 to assume the position shown inFig. 6 supporting the weight 9, and holding the cut-off gates 4, 4 intheir open position.

76 indicates a stop pin in the side wall of the hopper to limit theupward movement of the lever 15 and therefore the swinging movement ofthe trip trigger 12.

The continued rotation of the cam 70 returns the lifting arm 75 to itsinitial position shown in Fig. 6, where it remains during the completionof the new cycle of movements leaving the weight 9 free to fall andagain close the cut-off gates 4, 4 as previously described.

Having described one complete cycle of movements including the weighingof a charge of material and the manner in which the scale mechanismoperates to control and start the shaft 17, I will now proceed with avery brief description of the packing mechanism, it being supposed thata can 89 is in position to receive a charge of powder.

Referring to Fig. 4, it will be seen that when the powder has beendischarged from the weighing bucket 28, it will enter the chute 77 aspreviously stated, and will be directed through the branch connection 78into the powder receiving chamber 304 of the packing chamber or unit 79.This packing unit 79 (Fig. 4) is provided with a horizontal slide valve114, and suitable vertical air passages 81.

It will be clear from the foregoing description by reference to Fig. 3and from my copending application above, that being rigidly connectedtogether, the packing chambers or units 79, manifold 94, and endbrackets 90 and 91 comprise a movable reciprocating section of thepacking mechanism which is raised and lowered in proper time with theother coacting parts of the machine to permit the empty cans to beproperly positioned. But, the means by which this is accomplished willnow be briefly described.

As the clutch shaft 17 rotates by reason of the engagement of the clutchmechanism 23 with the gear 21, as above described, motion is impartedfrom the gear 25 to the idle pinion 100, pinion 101, mounted on theouter end of the short shaft 102, thence through the pinion 103 (Fig. 3)on the inner end of said shaft 102, to gear 104 and to the shaft 105,all as will be clear from Figs. 1, 2, 3 and 5. The ratio of the gearingis such that one revolution of the shaft 105 00-- incides with onerevolution of the clutch shaft 17 and takes place in substantially thesame interval of time.

Rigidly mounted on the shaft 105 (Figs. 1, 3 and 4) is a cam 106 (Figs.3 and 4) which, through the roller 107, cam lever 10S, and connectionsto the rock shaft 110, imparts motion through suitable connections tothe guide brackets 90 and 91 and raises and lowers the said movablesection of the packing mechanism.

The mechanism be clear from the foregoing, weighs out a predeterminedamount of powder, delivers the same into a chamber, raises the chamberand its coacting parts to permit an empty receptacle to be positioned,lowers said chamber to seal said receptacle from the outer air, and bythe means of plungers packs the material in the receptacle. But indealing with finely divided powders, it is very desirable to fill thereceptacles after they are exhausted of their contained air for reasonsstated in my application above, and to this end the air exhausting meanswill now be briefly disclosed.

As has been stated above, the same movement of the rock shaft 47 (Figs.2 and 5) which throws the clutch 23 into engagement and starts therotation of the clutch shaft 17 to start the machine, also opens theexhaust' air valve F (Figs. 1, 2 and 5).

thus far disclosed, it will hand, before the powder cut-01f The openingof the exhaust air valve F allows the air to be exhausted through thepipe line 177 and manifold air conduit 94 (see arrows) from the can 89to the vacuum tank 178 in which a partial vacuum is main tained, by theair pump 179, (Figs. 1 and 2).

Just before the machine completes a cycle of operations, the exhaust airvalve F is closed by means of an arm 180 (Figs. 1 and 5) on the shaft105, which brings the pin 181, mounted thereon, in contact with thebell-crank arm 182 pivotally mounted as at 183 on a bracket 184 held tothe side frame A of the machine (Figs. 1 and 5). The bell crank 182 isconnected to the three arm lever 171 of the air exhaust valve F, by thelink 185, which three arm lever is free to return to its initial orclosed position by reason of the pin 174 traveling in the slot 175.

Having described in detail the different mechanisms employed in carryingout this invention, I will proceed now to describe one complete cycle,embracing all the various operations of the machine. Previous tostarting the machine, it must be understood that empty cans 89 have beenproperly placed in position on the track 192, and one can is in itsproper position under the packing chamber 79. In order to accomplish theproper alining of the can with the packing chamber, the machine must beallowed to make one complete cycle by throwing the clutch intoengagement by gates 4, 4 are operated. lVhen the hopper 1 is filled withpowder and power is supplied to the pulley 19, the power shaft 18 isgiven constant rotation in the direction of the arrow. The powdercut-off gates 4 within the hopper 1 are now opened by hand to theposition shown in Fig. 6 allowing powder to flow to the scale bucket 28,which upon receiving a predetermined amount, will overbalance the scalebeam 27 and move downward, shutting off the flow of powder by reason ofthe pin 300, tripping the trip trigger 12, and permitting the togglelevers 6 and 7 to close the gates 4 under the influence of the weight 9(Fig. 8). The continued downward movement of the scale bucket 28 (Fig.13) brings the trip arm 33 of the latch 32 in contact with the trip 34,releases the bucket bottom and causes the discharge of the powder intothe chute 77. The downward swinging of the bucket bot tom 30 throws theweighted arm 41 over the center and through the bar 44, unhooks thelatch 45 from the holding arm 46 leaving the rock shaft 47 free to rock,and permit the clutch to be thrown into engagement, which movementthrough the link 169 also opens the exhaust air valve F (Fig. 5), aswill be clear from my application above. It will be seen that theopening of the valve F is substantially coincident with the discharge ofthe powder into the chute 7 7.

The exhaust air valve F being open as the charge of powder is fallinginto the powder receiving chamber 304, there is an induced current ofair flowing down through the chute 77, powder receiving chamber 304,foraminous material 119 and up through ports 82, 81 and manifold 94 tothe exhaust air line 177 (Fig. 4). This current of air sucks or sweepsthe char e of powder down into the receiving chamber, preventing thepuffing out of dust into the surrounding atmosphere, as is usual inoperations of similar nature. The scale bucket 28 and scale beam 27being relieved of the weight of a charge of powder return immediately tothe position shown in Fig. 6,under the influence of the weight 29.During this return movement the bucket bottom 30 is closed.

by the counter balancing weight 38. The

scale mechanism is now in position to receive a subsequent charge ofpowder. Closely following the starting of the clutch shaft 17 the rockshaft 47 returns to its initial position, (Fig. 11) by the cam 56 actingthrough the arm 58; and the cam 59 is so timed as to reset the weightedlever 41 and return latch 45 through the arm 61 and reset bar 62. Therock shaft 47 is now held in its locked position until the shaft 17 hascompleted one revolution, when the clutch is disengaged through theaction of the arm engaging the anti-friction roller 52. Substantiallycoincident with the action of cams 56 and 59, the cam 65 throws the trip34 out or possible engagement with the trip arm 33 and prevents anyfiirther discharge of powder from scale bucket 28 if the same shouldreceive a second load, during the same cycle of the machine. The trip 34is returned to its initial or tripping position slightly in advance ofthe disengagement of the clutch and of the stoppage of the clutch shaft17.

hile the foregoing operations are taking place, and early in thebeginning of the rotation of the clutch shaft 17, the cam (Figs. 6 and8) thereon, by means of the arms 73 and 75 automatically opens the gates4, and returns the arm 75 to its initial or down position. The trigger12 under the influence of the weight 14 is also returned to its initialposition supporting the roller 11. and holding the gates 4 open untiltripped by the poising of the scale beam 27 during a subsequentoperation.

hen a charge of powder is weighed and discharged, as has been justdescribed, the cross head 144. carrying the plunger 138 is in its upperor elevated position, as best seen in Fig. 4, and a slide valve 114holds the powder resting thereon with the piece of foraminous material119 permitting the air to be sucked through the passage 120 from thesaid powder and also from the vessel 89. When in this position, the triphammer 160 (Figs. 3 and'4) falls on the upper portion of the chamber 78by reason of the roller 163 passing out of engagement with the tripfinger 165, and shakes any material which may be clinging to the chute77, down into the chamber 304. Of course, it is understood that theshaft 105 is being rotated by means of power transmitted from the clutchshaft 17 through the gears 25, 100, 101, 103 and 104, as will be clearfrom Fig. 3.

The vibrations due to the impact of the hammer 160 on the chamber 78 andchute 77 also aid in effectually stripping the air from the powder whichmay linger in the chamber 304.

Closely following the action of the trip hammer 160, the plungerintermittent driving gear 151 (Figs. 1, 3 and 5) engages theintermittently driven gear 152 and imparts movement to the crank shaft158, which, rotating in the direction of the arrow, through the coactingparts 155, 156 and 158, moves the cross head 144 downward, in the guides150, which are carried by the side frames'A and B of the machine. Thesubsequent operations serve to remove the valve 114 out of the way ofthe powder, to fill the packages 89 therewith and to compress the samein the said packages, all while the air is excluded, as will be clearfrom my copending application above, and need not be here repeated. Thesaid ap plication also makes it clear that the can is sealed against theatmosphere so that no powder is puffed out or lost during the operation.

It should be said in passing, however, that in order to properly andautomatically position the receptacles 89, they are supported on thetracks 192, Figs. 1, 2 and 4, which are secured to the truss bars C andD of the frame of the machine. The said cans 89 are retained in positionon the tracks by the guides 193, Fig. 2, and are advanced at the propertime by the fingers 194, Fig. 4, properly spaced on and attached to thechains 195. These said chains run on sprockets 196 rigid on the shaft197,'which shaft receives an intermittent movement from the cam 19S(Figs. 1 and 2) rigidly mounted on the end of the clutch shaft 17,through the roller 199, cam bar 200, ratchet arm 201, loosely mounted onthe shaft 197, pawl 202 and ratchet wheel 203 rigid with the shaft 197,Figs. 1, 2, 3 and 5. The shaft 197 is journaled in extension brackets204 which project in the rear of the frame of the machine. The tracks192 and chains 195 may be of any desired length and supported in anyconvenient manner at any distance from the machine on the front, or sideopposite to the shaft 197.

After the can is filled, as described in the said application, theclutch controlling the machine disengages, and the cycle is repeated.

It is obvious that those skilled in the art may vary the details ofconstruction and the arrangement of parts without departing from thespirit of my invention, and there fore I do not wish to be limited tothe above disclosure except as may be required by the claims.

What I claim is 1. In a powder filling machine, the combination of ahopper for containing powder; a weighing bucket having a bottom adaptedto receive powder from said hopper; a scale beam supporting said bucket;means for holding said bottom closed while receiving powder from saidhopper; means for releasing said bottom when said bucket has re ceived apredetermined amount of powder; and means associated with said bucketbottom for governing the supply of powder to said bucket, substantiallyas described.

2. In a powder filling machine, the combination of a hopper forcontaining powder; valves in said hopper adapted to be opened and closedto control the supply of powder flowing therefrom; a weighing buckethaving a bottom adapted to receive powder from said hopper; a scale beamsupporting said bucket; means for holding said bottom closed whilereceiving powder from said hopper; means for releasing said bottom whensaid bucket has received a predetermined amount of powder; and meansassociated with said bucket bottom for cutting off the supply of powderto said bucket, substantially as described.

3. In a powder filling machine, the combination of a hopper forcontaining powder; means controlling the flow of powder from said hoppercomprising weighted toggle links; means to lift the weight of saidlinks; a weighing bucket adapted to receive powder from said hopper; andmeans associated with said weighing bucket adapted to control themovements of said weight lifting means, substantially as described.

4. In a powder fillin machine, the combination of a hopper forcontaining powder; means controlling the flow of powder from said hoppercomprising weighted toggle links and valves associated with said links;means comprising a lever and cam to lift the weight of said links; aweighing bucket adapted to receive powder from said hopper; and meansassociated with said weighing bucket adapted to control the movements ofsaid weight lifting means, substantially as described.

5. In a powder filling machine, the combination of a filling hopper; ascale beam; a weighing bucket carried by said beam adapted to receivepowder from said hopper; means associated with said beam and hopper forautomatically controlling the flow of powder from said hopper to saidbucket; and means governed from said bucket for moving said controllingmeans, substantially as described.

G. In a powder filling machine, the combination of a filling hopper; ascale beam; a weighing bucket carried by said beam adapted to receivepowder from said hopper; a controlling means for said hopper; meanscomprising a shaft, a cam on said shaft and a lever operated by said camfor automatically moving said controlling means; and means associatedwith said beam and hopper for governing said controlling means,substantially as described.

7. In a powder filling machine, the'combination of a filling hopperhaving a controlling means comprising a weight controlled valve; a scalebeam; a weighing bucket carried by said beam adapted to receive powderfrom said hopper; means comprising a lever adapted to lift said weightfor automatically governing the operation of said controlling means;means associated with said beam and hopper for governing saidcontrolling means; and means associated with said bucket for governingsaid lever, substantially as described.

8. In filling machine, the combination of a hopper; a weighing bucketadapted to receive powder from said hopper; a weight controlled valvefor governing the flow of powder from said hopper to said bucket; alever for lifting said weight; a cam for operating said lever; a shafton which said cam is mounted; a clutch for governing the application ofpower to said shaft; a lever for controlling said clutch; and meansassociated with said bucket for controlling said last named lever,substantially as described.

9. In a filling machine, the combination of a hopper; a weighing bucketadapted to receive powder from said hopper; a weight controlled valvefor governing the flow of powder from said hopper to said bucket; alever for lifting said weight; a cam for operating said lever; a shafton which said cam is mounted; a clutch for governing the application ofpower to said shaft; a lever for controlling said clutch; and meanscomprising a slotted rod and pivoted lever associated with said bucketfor controlling said last named lever, substantially as described.

10. In a filling machine, the combination of a hopper; a weighing bucketadapted to receive powder from said hopper; a weight controlled valvefor governing the flow of powder from said hopper to said bucket; alever for lifting said weight; a cam for operating said lever; a shafton which said cam is mounted; a clutch for governing the application ofpowder to said shaft; a lever for controlling said clutch; meansassociated with said bucket for controlling said last named lever; andmeans associated with said bucket and shaft for restoring certain of theparts to their normal positions, substantially as described.

11. In a filling machine, the combination of a hopper; a weighing bucketadapted to receive powder from said hopper; a weight controlled valvefor governing the flow of powder from said hopper to said bucket; alever for lifting said weight; a cam for operating said lever; a shafton which said cam is mounted; a clutch for governing the application ofpower to said shaft; a lever for controlling said clutch; meansassociated with said bucket for controlling said last named lever; andmeans comprising cams on said shaft, and a sliding rod for restoringcertain of the parts to their normal positions, substantially asdescribed.

12. In a filling machine, the combination of a movable weighing bucket;a hinged bot tom carried by said bucket; a lever controlled by theopening movement of said bottom; a clutch; connections between saidclutch and lever; a rotating shaft controlled by said clutch; and meansassociated with said shaft for closing said bottom after it has beenopened, substantially as described.

13. In a filling machine, the combination of a movable weighing bucket;a hinged bottom carried by said bucket; a lever controlled by theopening movement of said bottom; a clutch; connections between saidclutch and lever; a rotating shaft controlled by said clutch; and meansassociated with said shaft comprising a cam, and a lever associated withsaid. cam for closing said bottom after it has been opened,substantially as described.

l-l. In a filling machine, the combination of a filling hopper; aweighing bucket adapted to receive material from said hop per; a bot-tomin said bucket adapted to be opened and closed; a chamber adapted toreceive said material from said bucket when said bottom is opened; meansfor compacting said material in said chamber; a rotat ing shaft; meansassociated with said bot-- tom adapted to control the rotations of saidshaft; and means cont-rolled by said shaft for closing said bottom afterit has been opened, substantially as described.

15. In a filling machine, the combination of a filling hopper; aweighing bucket adapted to receive material from said hopper; a bottomin said bucket adapted to be opened and closed; a chamber adapted toreceive saic material from said bucket when said bottom is opened; meansfor compacting said material in said chamber; a rotating shaft; meansassociated with said bottom adapted to control the rotations of saidshaft; means controlled by said shaft for and closed; a chamber adaptedto receive said material from said bucket when said bottom" is opened;means for compacting said material in said chamber; a rotating shaft?means associated with said bottom adapted to control the rotations ofsaid shaft; means governed by said shaft for operating the flowcontrolling means in said hopper; means governed by said shaft forcontrolling the compacting operations; and

means controlled by said shaft for closing said bottom after it has beenopened, substantially as described.

' 17 'In a filling machine, the combination of a filling hopper; a valvegoverning the flow of material from said hopper; a weighing bucketadapted to receive material from said hopper; a bottom for said bucketadapted to be opened and closed; a catch movable up and down with saidbucket to hold said bottom closed; a stop to engage said catch andrelease said bottom; means to move said stop out of the path of saidcatch; a chamber adapted to receive said material when said bottom isopen; means for compacting said material in said chamber; a rotatingshaft; connections associated with said bottom adapted to control therotations Copies of this patent may be obtained for of said shaft; meanscontrolled by said shaft for governing said valve; means controlled bysaid shaft for governing the movements of said stop; and meanscontrolled by said shaft governing the movements of said compactingmechanism, substantially as described.

18. In a filling machine, the combination of a filling hopper; a valvegoverningthe flow of material from said hopper; a. weighing bucketadapted to receive material from said hopper; a bottom for said bucketadapt ed'to be opened and closed; acatch movable up and down with saidbucket to hold said bottom closed; a stop to engage said catch andrelease said bottom; means to move said stop out of thepath of saidcatch; a chamber adapted to receive said material when said bottom isopen; means for compacting said material in said chamber; means forexhausting the air from said compacted material; a rotating shaft;connections associated with said bottom adapted to control the rotationsof said shaft; means controlled by said shaft for governing said valve;means controlled by said shaft for goyerning the movements of said stop;means controlled by said shaft for governing the air exhausting means;and means controlled by said shaft governing the movements of saidcompacting mechanism, substantially as described.

In testimony whereof, I afiix my signature, in presence of twowitnesses, i

HAYWOOD 'GUIQN DEWVEY.

Vitnesses':

F ANK R. CASSELL, lVM. L. Amnicos'r;

Washington, D. 0.

